From: Steven Cohen (
Date: Fri Mar 03 2017 - 10:49:47 CST

Hi Karol,

So far as I know MDFF requires a .situs format EM map. You can convert map
formats using several programs. I use, which is part of EMAN 2.
Depending on the file you convert you may need to define certain variables,
such as the pixel size or origin. For example, to convert an .hdf file to
.situs, I need to define the pixel size as such foo.hdf foo.situs --apix=#.##


On Fri, Mar 3, 2017 at 10:51 AM, Karol KASZUBA <>

> Hi,
> I want to fit my structure into EM map.
> I have an initial.pdb and density into which it needs to be fitted, but
> there is a problem: in order to generate MDFF potential I need a map in .dx
> format. So, I need to convert from .mrc to .dx.
> I tried to google it out, but I can't find nothing about it.
> Any ideas?
> thanks
> karol

Steven Cohen
Graduate Student, Drennan Lab
Department of Chemistry
Massachusetts Institute of Technology